Title:
PLASTIC OPTICAL ELEMENT
Document Type and Number:
Japanese Patent JPH02254402
Kind Code:
A
Abstract:
PURPOSE:To obtain the optical element having an antidazzle effect by polymerizing a monomer mixture contg. prescribed % of erbium methacrylate and/or erbium acrylate, prescribed % of methacrylic acid and/or acrylic acid, etc. CONSTITUTION:This optical element is formed by polymerizing the monomer mixture contg. 0.1 to 20wt.% erbium methacrylate and/or erbium acrylate, 10 to 80wt.% methacrylic acid and/or acrylic acid and 10 to 90wt.% styrene and/or styrene deriv. The plastic optical element formed in such a manner is adequate particularly as the lens for spectacles. Since the erbium methacrylate and/or erbium acrylate is used to impart the antidazzle property to the optical element while maintaining transparency, blue light of about 510 to 530nm wavelength region is selectively absorbed. The optical element which has the antidazzle effect is thereby obtd.
Inventors:
KADOWAKI SHINICHIRO
Application Number:
JP7505589A
Publication Date:
October 15, 1990
Filing Date:
March 29, 1989
Export Citation:
Assignee:
HOYA CORP
International Classes:
G02B1/04; C08F212/00; C08F212/08; C08F220/02; C08F220/04; C08F220/06; (IPC1-7): C08F212/08; C08F220/02; C08F220/04; C08F220/06; G02B1/04
Attorney, Agent or Firm:
Shizuo Nakamura (2 outside)